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DE69232943D1 - TRANSMITTER / RECEIVER WITH TWO OPERATING MODES - Google Patents

TRANSMITTER / RECEIVER WITH TWO OPERATING MODES

Info

Publication number
DE69232943D1
DE69232943D1 DE69232943T DE69232943T DE69232943D1 DE 69232943 D1 DE69232943 D1 DE 69232943D1 DE 69232943 T DE69232943 T DE 69232943T DE 69232943 T DE69232943 T DE 69232943T DE 69232943 D1 DE69232943 D1 DE 69232943D1
Authority
DE
Germany
Prior art keywords
transmitter
receiver
spread
spectrum
narrowband
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69232943T
Other languages
German (de)
Other versions
DE69232943T2 (en
Inventor
C Dixon
S Vanderpool
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xircom Wireless Inc
Original Assignee
Xircom Wireless Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xircom Wireless Inc filed Critical Xircom Wireless Inc
Publication of DE69232943D1 publication Critical patent/DE69232943D1/en
Application granted granted Critical
Publication of DE69232943T2 publication Critical patent/DE69232943T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2634—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for channel frequency control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)

Abstract

A dual-mode transmitter having an antenna, a mode controller, a source encoder, a tunable-frequency synthesizer, a chip-code generator, a spread-spectrum modulator, a narrowband modualator, a power amplifier, and an adjustable bandpass filter. Also provided is a dual-mode receiver having a mode controller, a tunable-frequency synthesizer, a chip-code generator, an antenna, an adjustable bandpass filter, a preamplifier, a frequency converter, an IF amplifier, a spread-spectrum despreader, a spread-spectrum demodulator, a narrowband modulator, and a source decoder. For the transmitter and receiver, the mode controller selects receiving a narrowband modulation or a spread-spectrum modulation. The tunable-frequency synthesizer generates a local oscillator signal for the receiver, and a carrier signal for the transmitter. The chip-code generator generates a chip code signal for both the transmitter and the receiver. With a narrowband modulation setting of the mode controller, the transmitter and receiver have the adjustable bandpass filters adjusted to a narrowband width for telephone communications. With a spread-spectrum setting of the mode controller, the adjustable bandpass filters and the system are adjusted to transmit and receive a wide bandwidth for passing the spread-spectrum signal.
DE69232943T 1991-05-13 1992-05-11 TRANSMITTER / RECEIVER WITH TWO OPERATING MODES Expired - Fee Related DE69232943T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69869491A 1991-05-13 1991-05-13
PCT/US1992/004044 WO1992021195A1 (en) 1991-05-13 1992-05-11 Dual mode transmitter and receiver

Publications (2)

Publication Number Publication Date
DE69232943D1 true DE69232943D1 (en) 2003-04-10
DE69232943T2 DE69232943T2 (en) 2003-08-28

Family

ID=24806299

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69232943T Expired - Fee Related DE69232943T2 (en) 1991-05-13 1992-05-11 TRANSMITTER / RECEIVER WITH TWO OPERATING MODES

Country Status (8)

Country Link
US (1) US5291516A (en)
EP (1) EP0584248B1 (en)
JP (1) JP2846118B2 (en)
AT (1) ATE233971T1 (en)
AU (1) AU2140092A (en)
CA (1) CA2102914A1 (en)
DE (1) DE69232943T2 (en)
WO (1) WO1992021195A1 (en)

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DE69232943T2 (en) 2003-08-28
EP0584248A4 (en) 1995-12-27
US5291516A (en) 1994-03-01
EP0584248A1 (en) 1994-03-02
CA2102914A1 (en) 1992-11-26
JP2846118B2 (en) 1999-01-13
WO1992021195A1 (en) 1992-11-26
JPH06507768A (en) 1994-09-01

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